Outbreaks of jumping and dancing followed the introduction of Methodist preachers into country districts in the eighteenth century. In Wales, a sect of 'Jumpers' originated from this cause, and many of the American 'Jumpers' and 'Dancers' seem to have had their origin from this Welsh outbreak. In all such cases the spread of the mania was helped, if not made possible, by the preachers. They themselves looked upon these exhibitions as manifestations of the power of God, and so encouraged their hearers in their behaviour. Not every minister has the common sense of the Shetland preacher cited by Hecker. An epileptic woman had a fit in church, which a number of others hailed as a manifestation of the power of God. Sunday after Sunday the same thing occurred with other women, the number of the sufferers steadily increasing. The thing threatened to assume such proportions, and to become so great a nuisance, he announced that attendants would be at hand who would dip women in the lake who happened to be seized. This threat proved a most powerful form of exorcism. Not one woman was affected. Similar conduct might have been quite as efficacious in preventing many religious manifestations that have assumed epidemic proportions. Unfortunately, the influence of preachers and religious teachers was most usually cast in the other direction. Very often, of course, they were no better informed than their congregations; at other times they undoubtedly encouraged the delusion for interested reasons. The most striking recent illustration of this latter behaviour was seen in the Welsh revival led by Evan Roberts. Of this man's mental condition there could be little doubt. Just as little doubt could there be that the behaviour of the congregations was wholly due to the power of suggestions upon weak and excitable natures. Yet scarcely a preacher in Britain said a word in disapproval. Hundreds of them used the outbreak to illustrate the power of religion. Many prominent preachers travelled down to Wales and returned telling of the great manifestations of 'spiritual power' they had witnessed. How little removed such behaviour is from that of the savage watching with awe the actions of one suffering from epilepsy or insanity, readers of the foregoing pages will be in a position to judge.